We all know neocities, but I remember another with a similar font and aesthetic, that has a link on the homepage, directly under a warning to turn back. Clicking on the link sends you to a creepy page, but I CAN'T REMEMBER THE NAME OF THE SITE.
Anyway, anyone know some other good ones?

Not really a roleplay cult.
As I said, most of Systemspace only has a Lain aesthetic, as the Hardcore Lain fanbase is systemspace's target audience, due to them being the most likely to beleive, or at least understand the Tsuki project.

"suicide is not required."
No systemspace/tsuki related suicides have been documented yet on media, don't know where you got the suicide idea from.